IceCube realtime alert:

Report generated (UTC):2023-07-24 02:37:51
Current time (UTC):

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Alert properties

Event type:
RA (J2000) [deg]:
Dec (J2000) [deg]:
Error radius [deg]:
Trigger time:
Run ID:
Event ID:
GCN Notice:

Skymaps

All-sky equatorial
All-sky Galactic

Nearby 4FGL sources

Fermi sources are shown within a 5 deg radius from the alert best-fit position. Sources contained within the error circle of the alert are highlighted in color. For sources with a known association, "Search Simbad" returns an identifier query using the association name listed (note that in many cases the association name is not resolved by Simbad). If no association is listed, return a radial search 0.3 deg around the Fermi source position.

NameRA [deg]Dec [deg]AssociationSearchDistance [deg]MWL
4FGL J0423.1+210665.7821.11TXS 0420+210Search Simbad3.10LCR FAVA DX
4FGL J0439.2+215169.8221.86SSTSL2 J043903.89+215240.5Search Simbad3.65LCR FAVA DX
4FGL J0409.2+254262.3125.70Search Simbad4.29LCR FAVA DX
4FGL J0422.3+195165.5919.86MS 0419.3+1943Search Simbad4.36LCR FAVA DX
4FGL J0429.8+284367.4628.72MG2 J042948+2843Search Simbad4.68LCR FAVA DX
4FGL J0447.2+244671.8024.77Search Simbad4.70LCR FAVA DX
4FGL J0440.8+274970.2227.83B2 0437+27BSearch Simbad4.90LCR FAVA DX

Nearby 3FHL sources

Fermi sources are shown within a 5 deg radius from the alert best-fit position. Sources contained within the error circle of the alert are highlighted in color. For sources with a known association, "Search Simbad" returns an identifier query using the association name listed (note that in many cases the association name is not resolved by Simbad). If no association is listed, return a radial search 0.3 deg around the Fermi source position.

NameRA [deg]Dec [deg]AssociationSearchDistance [deg]MWL
3FHL J0422.3+194965.5819.82SHBL J042218.4+195051Search Simbad4.40LCR FAVA DX
3FHL J0429.7+284567.4428.76MG2 J042948+2843Search Simbad4.71LCR FAVA DX
3FHL J0440.8+274970.2127.82B2 0437+27BSearch Simbad4.89LCR FAVA DX

Fermi-LAT prompt analysis

Fermi-LAT analysis of the alert over two different timescales of one month and the full mission.

One month results

Results per source

Fermi sources with a TS > 9 are included in this list. Links are provided for the spectral fits results as a plot, and in FITS and npy format.

NameRA [deg]Dec [deg]Distance [deg]Spectrum typeTSFlux above 100 MeV [ph cm^-2 s^-1]4FGL-DR3 flux above 100 MeV [ph cm^-2 s^-1]Result files
PS J0428.2+202667.0720.453.66PowerLaw12.574.682e-09N/ASpectrum plot FITS file npy file
PS J0444.3+243371.0824.564.02PowerLaw9.192.337e-08N/ASpectrum plot FITS file npy file
PS J0446.4+260971.6226.154.91PowerLaw19.821.458e-08N/ASpectrum plot FITS file npy file
4FGL J0433.6+290568.4129.105.23LogParabola73.648.810e-082.823e-09Spectrum plot FITS file npy file
PS J0437.7+292569.4529.425.86PowerLaw13.601.687e-09N/ASpectrum plot FITS file npy file
4FGL J0401.7+211260.4521.206.45PowerLaw41.057.584e-088.250e-10Spectrum plot FITS file npy file
PS J0500.9+303675.2530.6010.00PowerLaw10.921.555e-08N/ASpectrum plot FITS file npy file

Fermi-LAT GeV photons

GeV photons observed from the direction of the alert over the last month

Interactive skymap

The interactive window shows a background of the Fermi (color) skymap and markers for nearby sources in three HE catalogs: 4FGL, 3FHL, and 2WHSP. Other catalogs (2RXS and BZCat) plus a dynamic HiPS search in Simbad can be enabled from the layer control of the left. An additional Simbad search shows a selection of objects (detected in radio, X-rays, gamma-rays and/or galaxies) near the best fit position. The background sky can be changed to optical (Mellinger survey) from the radio buttons below the image.

Visibility

Visibility plots (elevation vs time) for four ground-based instruments over the next hours for the alert. Dark (light) bands indicate civil (astronomical) twilights for each site. Moon and sun elevations are also shown.

Swift visibility

Visibility conditions for Swift at the time of the report generation based on the distance of the alert position to the Sun and Moon. Red or green colors indicate if the position is observable (>23 deg away from the Moon and >47 away from the Sun).

Sun separation [deg]51.9 deg
Moon separation [deg]121.0 deg